I bought a blendtec in the fall and have loved making green smothies. I'll share mine if you share what you've tried.
Basic one I love
Enough cranberry juice to cover the blades
1/4 of a sliced frozen banana
2 handfulls of fresh spinach
Process till smooth. Add ice if you don't have frozen bananas
3 tb yogurt
fresh or frozen cherries (3 or 4)
couple of handfuls of kale
Ice to get your preferred consistency
This I pulled off of RealSimple that I like but I don't often had the frozen mango on hand.
Collard greens and Mango
2 tablespoons fresh lime juice
2 cups stemmed and chopped collard greens or spinach
1 1/2 cups frozen mango
1 cup green grapes
Process and add water as desired.
And this I got from this website http://www.mindbodygreen.com/0-7956/5-delicious-green-smoothies-for-beginners.html
and really like it when I have coconut water. It was also my DD's favorite when she was home from college.
3. Tropical Cleanse
1 cup frozen or fresh pineapple
1 small to medium banana (ripe and peeled)
1 inch piece of ginger
2 handfuls of spinach
1 cup water or coconut water (unpasteurized)